Part 1. Definition
In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D". 
Part 2. Example
[header] How to create a christmas tree forest [title] Consider the type of tree you want to plant. [step] There are a wide variety of christmas trees and include fir, pine, spruce, cypress, and cedar. These trees thrive in different climates and look different from one another. <sep> (A) It is important to research the tree before setting up your tree to try it out to make sure you can write the tree's growing season so that you can get the most supplies you need. If you're just interested in having a tree stand out, then make sure to check for the following : [substeps] Spruce trees. (B) [substeps] Trees green may be used in a mix of green and evergreen. Greens, such as pintos and olive oil, may be more delicate than these. (C) Where the trees grow together is up to you. [substeps] Spruce trees light up the night for hours in the morning and drown out the morning sunrise between afternoons. (D) Think about where your tree forest will be located and choose a tree that can thrive in that climate. [substeps] Balsam firs are a popular christmas tree species that grow in the northern united states and canada, in hardiness zones 3-5 or states like minnesota, north dakota, and montana.
Answer: D
Explanation: This is a good example. Only option D is about Christmas trees. So, it's the correct option.
Part 3. Exercise
[header] How to join the canadian army as a foreigner [title] Become a canadian citizen. [step] To become a citizen, you must legally live in canada for 3 consecutive years. Then, you can apply online, copy the required documents, pay the immigration fee, and mail in your completed application. <sep> (A) However, you can apply at any time during your dedept form (s), unless you are registering to become a canadian citizen before you are fully on your sas. The full requirements are similar to those of a european citizen; however, enroll in an international travel in canada you already have a canadian passport. (B) When approved, take a citizenship test, interview, take your citizenship oath, and receive your citizenship! [substeps] The process to obtain citizenship takes time and effort, but it is a prerequisite needed to join the canadian army. You must speak both english or french fluently and be well versed in canadian history. (C) The canadian army medal of honor will also need to be issued and approved by the u.s. department of homeland security (uscis). (D) [substeps] If you have any questions about your application, then contact the canadian embassy or consulate in the province where you reside. You must have at least 90 days to submit this form online before applying.
Answer:
B